[themacguffinman]

Not sure what's the issue here, according to the spec you should be able to get it on the first request:

> Sites that wish to serve mobile-specific sites using UA-CH can do that using the Sec-CH-UA-Mobile headers that are sent by default on every request.

What am I missing?

[grishka]

Hm? Did they change it since the last time I saw the spec? Then yes, it's sensible indeed.